Germination responses to salt stress of two intertidal populations of the perennial glasswort Sarcocornia ambigua

Freitas, Ricardo Franco; Costa, César Serra Bonifácio

doi:10.1016/j.aquabot.2014.04.002

Cited by 22 publications

(14 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Seed germination is considered as the most sensitive stage of the plant life cycle (Sidari et al, 2008). Salinity stress may affect seed germination process through its complete inhibition or delay in the initiation of the germination and seedling establishment through the oxidative stress, osmotic stress, and ion toxicity (Freitas and Costab, 2014;Zhang et al, 2012). Salinity tolerance during seed germination and seedling growth stage is critical for the establishment of plants that can grow in Saline soils (Munns and Tester, 2008).…”

Section: Resultsmentioning

confidence: 99%

Screening and Selection of Twenty Iranian Wheatgrass Genotypes for Tolerance to Salinity Stress during Seed Germination and Seedling Growth Stage

Sheikh-Mohamadi

Etemadi

Nikbakht

et al. 2017

horts

View full text Add to dashboard Cite

Desert wheatgrass (Agropyron desertorum L.), tall wheatgrass (Agropyron elongatum L.), and crested wheatgrass (Agropyron cristatum L.) are native cool-season grass species that exhibit potential as a low-input turfgrass. An increased understanding of the biochemical and physiological responses of wheatgrass species and genotypes to salt stress conditions is important for developing genotypes with enhanced tolerance to salinity. The objective of this study was to characterize the physiological and antioxidative properties in 20 Iranian wheatgrass genotypes and to observe their responses to salinity stress during seed germination and seedling growth stage. A completely randomized factorial design was used with two types of factors, four levels of salinity (0, 50, 100, and 150 mm of NaCl), wheatgrass genotypes, and three replicates. In this experiment, the results demonstrated that salinity limits the germination of Iranian wheatgrass genotype seeds. The result of this study showed that among the wheatgrass genotypes, ‘AD1’, ‘AD3,’ ‘AC6’, and ‘FA’ took the shortest average time to germinate. Higher levels of final germination percentage (FGP) were observed in ‘AD2’, ‘AD3’, and ‘AE5’ under salinity stress than other genotypes throughout the experiment. During a prolonged period of study, ‘AD1’ had greater rate of germination (GR) than other genotypes. Out of the 21 genotypes, five genotypes (‘AD1’, ‘AD2’, ‘AD3’, ‘AE5’, and ‘FA’ genotypes) were in the range of “salinity tolerant genotypes” cluster. The ‘AD1’, ‘AD2’, ‘AD3’, ‘AE5’, and ‘FA’ genotypes generally performed better than other genotypes under salinity conditions, mainly through maintaining higher enzymatic activities such as superoxide dismutase (SOD) (EC 1.15.1.1), catalase (CAT) (EC 1.11.1.6), ascorbate peroxidase (APX) (EC 1.11.1.11) and peroxidase (POD) (EC 1.111.1.7), and nonenzymatic antioxidant activities by glutathione (GSH). The ‘AD1’, ‘AD2’, ‘AD3’, ‘AE5’, and ‘FA’ genotypes also had higher proline levels and more of total nonstructural carbohydrates (TNC) content, lower malondialdehyde (MDA) content, and lower hydrogen peroxide content (H2O2).

show abstract

Section: Resultsmentioning

confidence: 99%

Screening and Selection of Twenty Iranian Wheatgrass Genotypes for Tolerance to Salinity Stress during Seed Germination and Seedling Growth Stage

Sheikh-Mohamadi

Etemadi

Nikbakht

et al. 2017

horts

View full text Add to dashboard Cite

show abstract

“…Seeds of S. neei were obtained from the germplasm of the BTH Lab (FURG, Rio Grande, Brazil). Seeds of f3 progenies of BTH1 and BTH2 genotypes of S. neei were germinated at thermoperiod of 12 h (30 • C): 12 h (20 • C) [23]. Seedlings were transferred to styrofoam trays filled with a mixture (1:1) of an organic compound (Humosolo Vida ® , Porto Alegre, Brazil) and fine beach sand and, 6 weeks later, to 50 cm 3 plugs with the same substrate.…”

Section: Plant Materials and Growth Conditionsmentioning

confidence: 99%

Growth, Phenolics, Photosynthetic Pigments, and Antioxidant Response of Two New Genotypes of Sea Asparagus (Salicornia neei Lag.) to Salinity under Greenhouse and Field Conditions

et al. 2018

View full text Add to dashboard Cite

Small succulent halophytic shrubs of the genera Salicornia and Sarcocornia (Salicornioideae, Amaranthaceae) are commonly named sea asparagus and consumed worldwide as green salad in gourmet food, as conserves, and beverages. Their shoots are rich in bioactive compounds and plants show high yields in a wide range of salinities, but little is known about how salt cultivation conditions affect their chemical composition. Two genotypes (BTH1 and BTH2) of the Brazilian sea asparagus Salicornia neei Lag. were evaluated for salt tolerance and changes in shoot concentrations of organic metabolites and antioxidant activity under different salt exposure in both greenhouse and field conditions. All greenhouse plants received full strength modified Hoagland solution in deionized water with a basic electrical conductivity (EC) of 1.7 dS m−1, and with NaCl concentrations (in mM) of ~0.1 (control), 34, 86, 171, 513, and 769. After fifty days of cultivation, both S. neei genotypes showed high salt tolerance and grew better under low salinities (34–86 mM NaCl) than under control salinity. Shoots of BTH1 genotype appeared to be undergoing lignification and used their high carotenoid content to dissipate the oxidative power, and the zeaxanthin content and de-epoxidation state of xanthophylls (DES) were positively affected by salinity. Under increasing salinity, BTH2 genotype had higher relative content of chlorophyll b, which may have lowered the plant photo-oxidation rate, and increased shoot concentration of the flavonoid quercetin (up to 11.6 μg g−1 dw at 769 mM NaCl), leading to higher antioxidant capacity. In the field experiment, after 154 days of irrigation with saline (213 mM NaCl) shrimp farm effluent, BTH2 plants grew taller, produced more metabolites (e.g., total phenolics, total free flavonoids, quercetin, and protocatechuic acid) and had a greater antioxidant capacity of shoots than that of BTH1 plants and that of traditional crops irrigated with fresh water. Yield and bioactive compound composition of S. neei genotypes’ shoots can be enhanced by cultivation under moderate saline conditions.

show abstract

“…Seeds of the S. neei F4 progeny of the lineage BTH1 (BTH1-F4) were obtained from germplasm Nutritional potential of sea asparagus diets at the Laboratório de Biotecnologia de Halófi tas and germinated following the protocol of Freitas and Costa (2014). Seedlings were maintained for a total of 25 weeks in an unheated greenhouse before being transplanted at the cultivation site.…”

Section: Methodsmentioning

confidence: 99%

Nutritional potential of a novel sea asparagus, Salicornia neei Lag., for human and animal diets

Doncato

Costa

2018

Biotemas

View full text Add to dashboard Cite

ResumoPotencial nutricional de uma nova variedade de aspargo marinho, Salicornia neei Lag., para dietas humana e animal. O perfil mineral e o valor nutricional para a alimentação humana e animal de uma nova variedade de aspargo marinho brasileiro, Salicornia neei Lag., foram caracterizados por espectrofotometria. As plantas da progênie F4 da variedade pura denominada BTH1, cultivada com eluente salino da carcinicultura, possuem alto conteúdo mineral, particularmente N, K, P, Ca, Fe e Mn. A ingestão diária de 20, 200 e 5 g de caules secos de BTH1-F4 pode ser inserida e suplementada nas dietas, respectivamente, do homem, ovelhas e peixes cultivados comercialmente. AbstractThe mineral profile and nutritional value of a novel variety of the Brazilian sea asparagus, Salicornia neei Lag., was characterized for feeding humans and animals using spectrophotometry. Plants of the F4 progeny of the purebred variety named BTH1 cultivated with saline shrimp farm efluent have high mineral content, particularly N, K, P, Ca, Fe and Mn. Daily intakes of 20, 200 and 5 g of dried shoots of BTH1-F4 could be added to and supplement human, sheep and commercial fish diets, respectively.

show abstract

Germination responses to salt stress of two intertidal populations of the perennial glasswort Sarcocornia ambigua

Cited by 22 publications

References 23 publications

Screening and Selection of Twenty Iranian Wheatgrass Genotypes for Tolerance to Salinity Stress during Seed Germination and Seedling Growth Stage

Screening and Selection of Twenty Iranian Wheatgrass Genotypes for Tolerance to Salinity Stress during Seed Germination and Seedling Growth Stage

Growth, Phenolics, Photosynthetic Pigments, and Antioxidant Response of Two New Genotypes of Sea Asparagus (Salicornia neei Lag.) to Salinity under Greenhouse and Field Conditions

Nutritional potential of a novel sea asparagus, Salicornia neei Lag., for human and animal diets

Contact Info

Product

Resources

About